This inventor holds 2 USPTO granted patents. Top assignee: Nec Electronics Corporation. Active years: 2005-2006.
Company Filing History:
Years Active: 2005-2006
Title: Innovations by Yoshiyuki Katou in Semiconductor Technology
Introduction
Yoshiyuki Katou is a notable inventor based in Kanagawa, Japan. He has made significant contributions to the field of semiconductor technology, particularly in memory devices. With a total of 2 patents, his work focuses on enhancing the efficiency and functionality of semiconductor memory devices.
Latest Patents
Yoshiyuki Katou's latest patents include a semiconductor memory device and its test method, as well as a test circuit. The first patent provides a semiconductor memory device capable of checking operation in the worst-case address combinations, along with its manufacturing method. Specific data for testing are written into a memory cell array. A test signal is set to activate the device in test mode, allowing for normal read or write operations based on the first test address. Subsequently, a second test address is applied, enabling a refresh operation and another normal read or write operation. This process ensures that the data in the memory cell array is checked for any abnormalities.
The second patent focuses on a semiconductor memory device that reduces power consumption during refresh operations. The cell arrays are divided into four blocks, allowing for simultaneous refreshing of selected word lines from each block. This innovative approach significantly lowers power consumption compared to traditional methods.
Career Highlights
Yoshiyuki Katou is currently employed at NEC Electronics Corporation, where he continues to develop cutting-edge semiconductor technologies. His work has been instrumental in advancing the capabilities of memory devices, making them more efficient and reliable.
Collaborations
Throughout his career, Yoshiyuki has collaborated with notable colleagues, including Satoshi Yamamoto and Hideo Inaba. These partnerships have contributed to the successful development of his innovative patents.
Conclusion
Yoshiyuki Katou's contributions to semiconductor technology exemplify the importance of innovation in enhancing device performance and efficiency. His patents reflect a commitment to advancing the field and addressing the challenges of modern memory devices.